@import "../../base.less";

@import "../../mixins/_index.less";

@import "./_var.less";

.@{loading} {
  display: flex;
  align-items: center;
  position: relative;
  color: @loading-color;
  font-size: @loading-size;

  &--inherit-color {
    color: inherit;
  }

  &--vertical {
    flex-direction: column;

    .@{prefix}-loading__text {
      margin-left: 0;
      margin-top: 8px;
    }
  }

  &__bar {
    pointer-events: none;
  }

  &__text {
    color: @loading-text-color;
    line-height: 20px;
    margin-left: 6px;
    font-size: @loading-text-font-size;

    &--only {
      margin-left: 0;
    }
  }

  &__gradient {
    display: flex;
    justify-content: center;
    align-items: center;
    vertical-align: middle;

    &-conic {
      width: 100%;
      height: 100%;
      background: conic-gradient(
        from 90deg at 50% 50%,
        #fff 0deg,
        currentColor 360deg
      );
      border-radius: 50%;
      /* stylelint-disable-next-line */
      mask: radial-gradient(transparent calc(50% ~"-" .5px), #fff 50%);

      /* stylelint-disable-next-line */
      -webkit-mask: radial-gradient(transparent calc(50% ~"-" .5px), #fff 50%);
    }
  }

  &__spinner {
    position: relative;
    display: inline-block;
    width: 20px;
    max-width: 100%;
    height: 20px;
    max-height: 100%;
    vertical-align: middle;
    animation: t-rotate .8s linear infinite;
    animation-timing-function: steps(12);

    &--line {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;

      &::before {
        display: block;
        width: 2px;
        height: 25%;
        margin: 0 auto;
        background-color: @loading-line-bg-color;
        border-radius: 40%;
        content: " ";
      }
    }
  }

  &__dot {
    width: 20%;
    height: 20%;
    border-radius: 50%;
    background-color: currentColor;
    animation-duration: 1.8s;
    animation-name: dotting;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-fill-mode: both;

    &--paused {
      animation-play-state: paused;
    }

    &s {
      display: flex;
      justify-content: space-between;
      align-items: center;
      animation: none;
    }
  }

  &__parent,
  &__parent--relative {
    position: relative;
  }

  &--lock {
    overflow: hidden;
  }

  &--full {
    z-index: @loading-z-index;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    display: flex;
    align-items: center;
    vertical-align: middle;
    justify-content: center;
    background-color: @loading-full-bg-color;
  }

  &--fullscreen {
    position: fixed;
    display: flex;
    align-items: center;
    vertical-align: middle;
    justify-content: center;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: @loading-z-index;
    background-color: @loading-full-bg-color;
  }

  &--center {
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    justify-content: center;
  }
}

.generate-spinner(@n, @i: 1) when (@i =< @n) {
  .@{prefix}-loading__spinner--line-@{i} {
    transform: rotate(@i * 30deg);
    opacity: 1 - (.75 / 12) * (@i - 1);
  }
  .generate-spinner(@n, (@i + 1));
}
.generate-spinner(12);

@keyframes t-rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes dotting {
  0% {
    opacity: .15;
  }

  1% {
    opacity: .8;
  }

  33% {
    opacity: .8;
  }

  34% {
    opacity: .15;
  }

  100% {
    opacity: .15;
  }
}
